3408639 has 16 divisors (see below), whose sum is σ = 4967424. Its totient is φ = 2066400.

The previous prime is 3408599. The next prime is 3408641. The reversal of 3408639 is 9368043.

It is not a de Polignac number, because 3408639 - 2⁷ = 3408511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3408659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2154 + ... + 3384.

It is an arithmetic number, because the mean of its divisors is an integer number (310464).

Almost surely, 2^3408639 is an apocalyptic number.

3408639 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3408639 is a deficient number, since it is larger than the sum of its proper divisors (1558785).

3408639 is a wasteful number, since it uses less digits than its factorization.

3408639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 3408639 is about 1846.2499830738. The cubic root of 3408639 is about 150.4967089415.

It can be divided in two parts, 3408 and 639, that multiplied together give a palindrome (2177712).

The spelling of 3408639 in words is "three million, four hundred eight thousand, six hundred thirty-nine".